package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;


    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1.根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);
        //2.处理各种异常情况（用户名不存在，密码不对，账号被锁定）
        if(employee == null){
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //TODO 后期需要进行md5加密，然后在进行比对  --TODO代表当前这个工作还没完成，还需要有一个后续的工作
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if(!password.equals(employee.getPassword())){
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        //账号比对
        if(employee.getStatus() == StatusConstant.DISABLE){
            //账号锁定
           throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //返回实体对象
        return employee;

    }


    /*
    *  新增员工
    * */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("当前线程的id:"+Thread.currentThread().getId());
        Employee employee = new Employee();

        //对象属性的拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //设置账号的状态，默认正常状态，1表示正常，0表示锁定
        employee.setStatus(StatusConstant.DISABLE);

        //设置密码，默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //设置当前记录的创建时间和修改时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //设置当前记录的创建人的id和修改人的id

        //TODO 后期要改为当前登录用户的id
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    /*
    *  分页查询
    * */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开启分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /*
     *  启用、禁用员工账号
     * */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);
    }

    /*
     *  根据id查询员工信息
     * */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("*****");
        return employee;
    }

    /*
    *  编辑员工信息
    * */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

       // employee.setUpdateTime(LocalDateTime.now());
       // employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }

}
